MODULE Desktop;
    IMPORT OS;

    VAR desktopRunning: CHAR;
        desktopWindow: ARRAY 36 OF CHAR;
        desktopIcons: ARRAY 5 OF Fox32OSButtonWidget;

    PROCEDURE DesktopMain();
    BEGIN
        desktopRunning := 1;

        (* set up the desktop icon widgets *)
        SetupDesktopIconStructs();

        (* create the window and make it fully transparent, draw the button widgets to it, and mark it as "always background *)
        new_window(PTROF(desktopWindow), "Desktop", 640, 448, 0, 16, 0, PTROF(desktopIcons));
        fill_overlay(000000000H, get_window_overlay_number(PTROF(desktopWindow)));
        draw_widgets_to_window(PTROF(desktopWindow));
        set_window_flags(000000001H, PTROF(desktopWindow));

        WHILE desktopRunning DO
            GetNextWindowEvent(PTROF(desktopWindow));

            (* mouse click event *)
            IF eventArgs[0] = PTROF(EVENT_TYPE_MOUSE_CLICK) THEN
                handle_widget_click(PTROF(desktopWindow), eventArgs[1], eventArgs[2]);

            (* button click event *)
            ELSIF eventArgs[0] = PTROF(EVENT_TYPE_BUTTON_CLICK) THEN
                HandleDesktopIconClick(eventArgs[1]);
            END;

            save_state_and_yield_task();
        END;
    END;

    PROCEDURE HandleDesktopIconClick(buttonId: INT;);
    BEGIN
        IF launch_fxf_from_disk("fetcher.fxf", get_boot_disk_id(), 0FFFFFFFFH, buttonId, 0, 0, 0) = 0FFFFFFFFH THEN
            new_messagebox("Failed to start new", "instance of fetcher.fxf", 0, 64, 64, 200);
        END;
    END;

    PROCEDURE SetupDesktopIconStructs();
    VAR desktopIcon: POINTER TO Fox32OSButtonWidget;
        prevDesktopIcon: POINTER TO Fox32OSButtonWidget;
    BEGIN
        desktopIcon := PTROF(desktopIcons[0]);
        desktopIcon^.type := WIDGET_TYPE_BUTTON;
        desktopIcon^.next := PTROF(desktopIcons[1]);
        desktopIcon^.id := 0;
        desktopIcon^.text := "Disk 0";
        desktopIcon^.fgColor := 0FF000000H;
        desktopIcon^.bgColor := 0FFFFFFFFH;
        desktopIcon^.width := 32;
        desktopIcon^.height := 32 + 16;
        desktopIcon^.x := 592;
        desktopIcon^.y := 16;

        prevDesktopIcon := desktopIcon;
        desktopIcon := PTROF(desktopIcons[1]);
        desktopIcon^.type := WIDGET_TYPE_BUTTON;
        desktopIcon^.next := PTROF(desktopIcons[2]);
        desktopIcon^.id := 1;
        desktopIcon^.text := "Disk 1";
        desktopIcon^.fgColor := 0FF000000H;
        desktopIcon^.bgColor := 0FFFFFFFFH;
        desktopIcon^.width := 32;
        desktopIcon^.height := 32 + 16;
        desktopIcon^.x := 592;
        desktopIcon^.y := prevDesktopIcon^.y + 32 + 32;

        prevDesktopIcon := desktopIcon;
        desktopIcon := PTROF(desktopIcons[2]);
        desktopIcon^.type := WIDGET_TYPE_BUTTON;
        desktopIcon^.next := PTROF(desktopIcons[3]);
        desktopIcon^.id := 1;
        desktopIcon^.text := "Disk 2";
        desktopIcon^.fgColor := 0FF000000H;
        desktopIcon^.bgColor := 0FFFFFFFFH;
        desktopIcon^.width := 32;
        desktopIcon^.height := 32 + 16;
        desktopIcon^.x := 592;
        desktopIcon^.y := prevDesktopIcon^.y + 32 + 32;

        prevDesktopIcon := desktopIcon;
        desktopIcon := PTROF(desktopIcons[3]);
        desktopIcon^.type := WIDGET_TYPE_BUTTON;
        desktopIcon^.next := PTROF(desktopIcons[4]);
        desktopIcon^.id := 1;
        desktopIcon^.text := "Disk 3";
        desktopIcon^.fgColor := 0FF000000H;
        desktopIcon^.bgColor := 0FFFFFFFFH;
        desktopIcon^.width := 32;
        desktopIcon^.height := 32 + 16;
        desktopIcon^.x := 592;
        desktopIcon^.y := prevDesktopIcon^.y + 32 + 32;

        prevDesktopIcon := desktopIcon;
        desktopIcon := PTROF(desktopIcons[4]);
        desktopIcon^.type := WIDGET_TYPE_BUTTON;
        desktopIcon^.next := 0;
        desktopIcon^.id := 1;
        desktopIcon^.text := "Disk 4";
        desktopIcon^.fgColor := 0FF000000H;
        desktopIcon^.bgColor := 0FFFFFFFFH;
        desktopIcon^.width := 32;
        desktopIcon^.height := 32 + 16;
        desktopIcon^.x := 592;
        desktopIcon^.y := prevDesktopIcon^.y + 32 + 32;
    END;
END.